The left channel on my Denon POA2400 has started sending a crackling noise to the tweeter of my front speakers on high frequencies. It's only evident on certain passages...mostly acoustic guitar and piano. At first I thought it was a damaged tweeter, but I swapped tweeters with the other speaker and it does the same thing. Tried swapping cables and speaker wire as well...it's definitely the amp.
The wierd part is that it only does it on those types of music...I listened
to the entire Pinks Floyds DSOTM and didn't hear it. I put on Chick Corea
Akoustic Band (track 2) which has a quite high noted piano intro and the
treble crackles like mad. I can repeat it at will. Metheny's "As falls Wichita..."
track 3 does the same thing. It's a high noted acoustic guitar solo.
I've got Polk LSi15's and an LSiC up front(4ohm) and 2 FXi3's in the rear(8ohm). I'm using a Denon 3805 AVR as the preamp and powering the other
speakers. My CD player is a Denon 2200. I've got Monster M Series biwire
and AudioQuest cables. I plan on taking the amp in for service...but if anyone has had this type of problem before and can give me a heads up as to what the Tech guy SHOULD tell me, I'd appreciate it.
20to20K
